153345033043bfea61574bdfc3e3f77388979ce320563d35f62b12f852574761

Analysis

max time kernel
145s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
04-05-2024 04:57

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General

Target

2024-05-04_b65280ae1c51470da1864d42f610a673_cryptolocker.exe
Size

64KB
MD5

b65280ae1c51470da1864d42f610a673
SHA1

c57c8b2c05e79dbbe2b31d7cb949c92274f615a4
SHA256

153345033043bfea61574bdfc3e3f77388979ce320563d35f62b12f852574761
SHA512

6da97e774005f0c743132968e2c3410772273f365d62e128891838fc61b660d66b4643a8bc9bd0574f4f3587d5e26e012f13020e6b8bd5caf759d883db61f67e
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293CiL:aq7tdgI2MyzNORQtOflIwoHNV2XBFV75

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023260-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023260-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-05-04_b65280ae1c51470da1864d42f610a673_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
2644	hurok.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2640 wrote to memory of 2644	2640	2024-05-04_b65280ae1c51470da1864d42f610a673_cryptolocker.exe	91
PID 2640 wrote to memory of 2644	2640	2024-05-04_b65280ae1c51470da1864d42f610a673_cryptolocker.exe	91
PID 2640 wrote to memory of 2644	2640	2024-05-04_b65280ae1c51470da1864d42f610a673_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-05-04_b65280ae1c51470da1864d42f610a673_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-04_b65280ae1c51470da1864d42f610a673_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2640
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:2644

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1340 --field-trial-handle=2292,i,2103142837140538807,15881446839139365070,262144 --variations-seed-version /prefetch:8
1⤵
PID:1444

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\hurok.exe

Filesize
65KB

MD5
b78e8dba453d2f37ffb1feab25ac942e

SHA1
dda4b09462016ae75fd2ba7847355bf73e225e3b

SHA256
3cbd2c9ae37ad9ea8888f7836c5cc03e8304ace4c7983b992afb43ca1cd38224

SHA512
0f7464239f4c6118a2a96628ef8d0a7621e3525cbcbe4a43cfc62514cfea4581575578069585181a88241698ccfeb0dbe33cdca5c8e11b0933c6dd96d2f01bc5

Download Submit
memory/2640-0-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/2640-1-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/2640-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2644-17-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download